| // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'dart:core'; |
| import 'dart:html'; |
| import 'dart:js'; |
| @MirrorsUsed(metaTargets: const [BindableAnnotation]) |
| import 'dart:mirrors'; |
| import 'package:js/js.dart'; |
| import 'package:js_util/js_util.dart'; |
| import 'package:polymer/polymer.dart'; |
| |
| const BindableAnnotation bindable = const BindableAnnotation(); |
| class BindableAnnotation { |
| const BindableAnnotation(); |
| } |
| |
| |
| ///This is a temporary bridge between Polymer Bindings and the wrapper entities. |
| class Binder<T extends HtmlElement> { |
| final Map<String, Symbol> attributes; |
| |
| const Binder(Map<String, Symbol> attributes) |
| : attributes = attributes; |
| |
| registerCallback(T element) { |
| assert(element != null); |
| setValue(element, 'bind', allowInteropCaptureThis(_callback)); |
| } |
| |
| void _callback(_this, name, value, [other]) { |
| final setter = attributes[name]; |
| if (setter == null) return; |
| Bindable bindable; |
| if (identical(1, 1.0)) { // dart2js |
| bindable = getValue(getValue(value, '__dartBindable'), 'o') as Bindable; |
| } else { // vm |
| bindable = getValue(value, '__dartBindable'); |
| } |
| var obj = reflect(_this); |
| obj.setField(setter, bindable.value); |
| bindable.open((value) { |
| obj.setField(setter, value); |
| }); |
| } |
| } |